Journals in this category require subscriptions for access to the most recent issues, but allow open access after an embargo period. The embargo period varies by journal, and may be as little as six months or as much as 15 years. There is no comprehensive list of delayed open access journals, but the following lists may be helpful:
There are many reputable and important open access journals available and this guide is intended to highlight as well as ease discovery of these resources. Most of this content was gratefully copied from this UCSB guide.
Utilize the following registries and search engines to find OA journals by subject, publisher and country.
Jeffrey Beall, Metadata Librarian at Auraria Library, University of Colorado Denver, has been monitoring open access publishers and maintains a list of "predatory" publishers. Note that his opinions are not universally shared - you may wish to read the comments section at the end of the list for other points of view on specific publishers. Beall's List of Predatory Open-Access Publishers
Some journals offer authors a "choice": publish articles under subscription access with no author fee, or under open access if the author pays a fee. Among the publishers offering open access for a fee at the author’s choice are:
National Academy of Sciences: PNAS Open Access Option (Note: All PNAS articles become open access six months after publication.)